<template>
  <div>
    <!--面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!--卡片视图区域-->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>

      <!--table表格区-->
      <el-table :data="goodslist" border stripe>
        <!--索引列-->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格（元）" prop="goods_price" width="95px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>

        <el-table-column label="商品创建时间" prop="add_time" width="140px">
          <template v-slot:default="scope">
            {{scope.row.add_time|dateFormat}}
          </template>
        </el-table-column>

        <el-table-column label="操作" width="130px">
          <template v-slot:default="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!--底部分页区域-->
      <el-pagination background
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagesize"
        :page-sizes="[1, 5, 10, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  name: 'List',
  data () {
    return {
      //  查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表
      goodslist: [],
      //  总数据条数
      total: 0
    }
  },
  created () {
    this.getGoodsList()
  },
  methods: {
    //  获取商品列表
    async getGoodsList () {
      const { data: res } = await this.$http.get('goods', { params: this.queryInfo })
      if (res.meta.status !== 200) {
        //  请求失败
        return this.$message.error('获取商品列表失败，请刷新页面！！')
      } else {
        //  请求成功
        this.goodslist = res.data.goods
        this.total = res.data.total
        this.$message.success('获取商品列表成功！')
      }
    },
    //  分页页码改变触发函数
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    //  监听删除按钮的点击事件
    async removeById (id) {
      const confrimRes = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confrimRes !== 'confirm') {
        //  不想删除
        return this.$message.info('已取消删除！')
      } else {
        //  删除
        const { data: res } = await this.$http.delete(`goods/${id}`)
        if (res.meta.status !== 200) {
          //  请求失败
          return this.$message.error('删除失败！！')
        } else {
          //  请求成功
          this.$message.success('删除商品成功！')
          //  刷新商品列表
          this.getGoodsList()
        }
      }
    },
    //  监听添加商品按钮的点击事件
    goAddPage () {
      this.$router.push('/goods/add')
    }
  }
}
</script>

<style lang="less" scoped>

</style>
